Journal
NATURE GEOSCIENCE
Volume 15, Issue 2, Pages 97-105Publisher
NATURE PORTFOLIO
DOI: 10.1038/s41561-021-00889-9
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Funding
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Lake Futures Project under the Global Water Futures umbrella
- Canada First Research Excellence Fund
- University Research Chair
- NSERC
- Pennsylvania State University
- NSERC Alexander Graham Bell Canada Graduate Scholarship
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Agricultural nitrogen legacies are causing delays in improving water quality, highlighting the need for comprehensive management strategies to address these issues and ensure better environmental outcomes.
Increasing incidences of eutrophication and groundwater quality impairment from agricultural nitrogen pollution are threatening humans and ecosystem health. Minimal improvements in water quality have been achieved despite billions of dollars invested in conservation measures worldwide. Such apparent failures can be attributed in part to legacy nitrogen that has accumulated over decades of agricultural intensification and that can lead to time lags in water quality improvement. Here, we identify the key knowledge gaps related to landscape nitrogen legacies and propose approaches to manage and improve water quality, given the presence of these legacies. Agricultural nitrogen legacies are delaying improvements to water quality. Comprehensive management strategies that address legacy issues are needed to ensure better environmental outcomes.
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